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Modbus user-defined function code

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Tianji Gao
Tianji Gao 2020-12-2
回答： Pranav Verma 2020-12-11
I am using modbus communication supported by Instrument Control Toolbox. The problem is my modbus slave has a user-defined function code 28 and I cannot find a possible way to send the command including the function code 28. The command I want to send should be like "01 28 ...", can anyone remind me of a way to do this?
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Tianji Gao
Tianji Gao 2020-12-3
To be specific, I want to find a matlab function that can send binary data over a modbus object.
Tianji Gao
Tianji Gao 2020-12-3
The only solution I can think of is to delete the modbus object, create a new serial object and use write() function to communicate.

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Pranav Verma
Pranav Verma 2020-12-11
Hi Tianji,
Here is the list of all the MODBUS communication functions supported by MATLAB. You can refer to the below add-on to check if it helps:
Modbus RS232 ASCII Communication Functions
Thanks

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